6 DOF Earthquake Simulation System
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6-DOF Seismic Simulation System It is used for various civil engineering applications including fundamental research for seismic isolation of buildings and bridges, seismic qualification of components, piping systems and nuclear power facilities. The seismic test systems are used worldwide and include many different types of earthquake shaking table configurations with specimen capacities ranging from small test articles to full scale buildings. Typical table configurations include one, two, three, and six degrees of freedom motion. KNR also can provide Multi-Axes Shake table for Subassembly Testing system by special requirement.

List of Possible Tests Seismic Table Uni-axial horizontal earthquake simulation test The table is constructed to provide a high natural Bi-axial horizontal earthquake simulation test frequency using a welded honeycomb structure. Vertical earthquake simulation test Natural frequency is over 100Hz. Complex(6-DOF) earthquake simulation test The top surface of the table is flat within 2mm over Performance test for earthquake-resistance bridge the entire table surface and include recessed M24 x 3.0 thread pattern on a 50cm square pattern with Multi-purpose vibration test for structure sealing...

Hydraulic Actuator Systems KNR uses reliable hydraulic hydrostatic actuators which are proved in various fields. displacements to allow the table to exercise equipped with through all extreme displacement conditions. The pressure stabilization capabilities to minimize oil swivel joints are rated to allow full dynamic loading column resonance effects and designed to provide and worst case loading conditions. minimum friction and to allow for high overturning moments. The Intima actuators utilize polymer averaging line accumulation are considered to hydrostatic rod bearings or ball joints...

Seismic Mass Foundation Overall seismic simulation system is placed on floating type seismic mass foundation. The seismic mass foundation prevent harmful vibration influence toward adjacent testing facilities/equipments as well as building itself. The seismic mass weight is over 30 times of the maximum payloads including table mass. Air-spring type vibration isolation system is able to float the seismic, and to help in balance. And control system is monitoring seismic mass position during test Mass Rig System In case of earthquake simulation test of bridge leg. the mass rig system provide...

6 DOF Seismic Simulation System Controller The controller for 6DOF Seismic Simulation System has four modules as the right side figure. It has Deneb-DE which gives real time control for each sensor and actuator, Sabio-Dynamic which shows the actuator's information in real time and pass the user's command to Deneb-DE, Sabio-K, and M which are pre and post processing module that converts the information from the sensors and actuators to the designated information for the user. The Deneb-DE is connected with hardware components which are actuators and service manifolds and transfer the signal...

Sabio-K & Sabio-M Sabio-M Function Forward kinematic post-processor; using forward kinematics calculation from the result of Deneb-DE and Sabio-C, it gets the real time results and provides various data. 8 axes data to 6DOF data conversion 6DOF displacement Data displa 6DOF acceleration Inverse kinematic Sabio-K pre-processor; using seismic data or producing arbitrary signal, it makes signals that can be adopted to the real control. 6DOF data to 8 axes data conversion Earthquake File load (*.at2) , .. Sine, Cosine, Triangle, Square Trapezoid, Point to Point Sweep, Random...

Sabio-D Sabio-D provides data from the analysis of the inverse kinematics to each actuator and also gives some complementary features and monitoring as well. Sabio-C Sabio-C gets the reference command from Sabio-D and controls the actuator. It's an intermediate interface between the hardware and Sabio-D and the user doesn't have to operate it. 8 axes data load Scheduler - repeat, hold, event Amplitude phase compensator Force balance compensator Compensator - Overturning moment compensator Off center load compensator Set point Auto initial point moving Displacement, Three variable...

Desired & measured signal under Nothridge earthquake signal 199, Wonam-ri, Namsa-myeon, Cheoin-gu, Yongin-si, Gyeonggi-do 449-881, Republic of Korea www.KNRsys.com